Piston-ring remover



Sept. 4, 1923.

- J. B. KABANUCK PISTON RING REMOVER Filed March 2'7, 1922 Z 7 m a J Patented ept. 4, 1923.

teases JACK B. KABANUCK, orn:1ur, NORTH nanora I rrsron-nrnennraovnnf a pea filed March 211922, 1 Serial it l 547,051,.

To all whom concern-L citizen of the United States, residingat Max, inthej county of McLean and State of North Dakota, haveinvented, certain new and use- Be it known: that. I, JACK B. dentition,

ful Improvements in Piston-Ring Removers,

of which the following is-a specification, reference, being bad to ithe" accompanying Thls invention relates to lm'provements 1n plston ring removers, and more particularly to a device for expanding piston rings to remove the same from, the they operate. i 1

An important object of the invention is to provide in a device of this character-means whereby. the amount ofexpansion iwhichlis grooves in which imparted .to the pistoncring may be. .ac-

curately gauged whereby to. prevent breakage of the ring and removal thereof.

A further object of the invention is to .provideg-a device of this character which is simple in constructionandoperation, durable in service, and a general improvement insthe These and other objects I attain by the construction and arrangement shown in the accompanying drawings wherein for the purpose of illustration is shown a preferr'ed em- 1 bodiment of my lnventlon and wherein like reference characters desi nate like parts throughout. i i

In the drawings: f

Figure 1 is a side elevation showing a piston ring remover constructed in accordance with my invention in. position to re ceive a piston preparatory to removing the rings therefrom and Figure 2 is a similar view showing the remover in the closed position and the ring expanded.

Referring now more particularly to the drawings, the numeral 10 indicates a pair of plier connected members, the jaw ends 11 of which have secured to their extremities oppositely extending diverging members 12, in the present instance shown as curved so as to admit a piston therebetween. To the ends of the diverging portions 12 are pivotally connected, as at 13, levers 14, the ends of which are curved, as indicated at 15, and provided with hooks 16 for engaging the edges of the piston ring at the split thereof, these ends 15 being preferably slightly elastic. To the opposite ends of the lovers 14 It will be seen that as the jaws are opened the levers 14- will be simultaneously separated at their pivot points and caused to rock about their pivot. points by, the link connection 17 ,1 this connection beingspaced from the pivot point- 10 of the plier membersa distance greater than the distance from the pivot point to the ends or the jaw members 11, andthe hook portions 16 of'the lever sclt are caused to approach one another.

,With the jaws open the piston maybe inserted intermediate the jawsand .the hooked movallfrom the groove. The-opposite movement oi lt hepivotal connection of the levers Hand. the movement imparted ebv thelink connection prevents the", mo ement f the member 16' being too rapid. Where the movementis rapid there will be a tendency .to slip and a'ccordin lvthis feature has been found to be of decided advantage.

. In' order to normally maintain the iaws 11 in the open position. between the handle portions oi the plier members 10. a spring 19 isinscrtedand in order that the rings may nothe opened to such an extent as to destroy their resiliency and fit within the piston or to break the same. a set screw 20,

is adiustablv mounted in one of the handle portions of the'plier members and is adapted to engage against the other of such handle po tions to limit the movement.

From the foregoing it is believed tohe obvious that a iston ring remover constructed in accordance with my invention is particularly well adapted for the use for which it is intended by reason oi the fact that means are provided for gradually expanding the ring and for adiusting tlie movement of theevpansion members to prevent over expansion of the ring. It will furthermore be obvious that the construction as hereinbeiore set forth is capable of some change and modification without materially departing from the spirit of my inlinks17 have one end pivotallyconnected,. 'j-the'opposite ends otthese links beingpivotally connected with the operating ends of the plier members 10, as indicated at 18. 1

,ends 16 of the levers 1ft engaged in the split oi the piston ring and. against the edges of ,the walls-of the split. The handle portions of the plier-"members being moved toward one another, the hookportions 16 are separated expanding the piston ring and enlarging the same-sufliciently to permit its renected to the ends of the divergent portions vention and I accordingly do not limit my self thereto except as hereinafter claimed.

I claim:

1. In a piston ring remover, a pair-of plier connected members, divergent members secured to the ends of the jaw portions of the plier members. levers pivotally conhook adapted to engagein'the slot of the piston ring, and links" pivotally connected tothe tree endsof said leversyand to the handle portions of the plier members, the pivotal connectionof said links with'the "handle portions ofthe plier members being at a point spaced from the.pivotal connection of the plier members a distance greater than the distance. from. the pivotal connection to the point of attachment of the divergent members 12' v 3. In a piston ring remover, a pairof plier connected members, divergent members secured to the ends of the jaw portions of the plier members, levers 'pivotally' connected to the ends of the divergent portions and each provided ,at one end theeof with p a hook adapted to engage in the slot of the piston ring links pivotally connected to the free ends of saidlevers'and to the handle portions of the plier members, and a spring extending intermediate the handle portions of 1 said plier; members.

I. In a piston ring remover, a pair of plier connected members, divergent members secured to the ends of the jaw portions of the plier: membersy levers pivotally connected to the ends of the divergent portions and each provident one end thereof with a hook adapted to' engage in the slot of the piston ring, links pivotally connected to the free ends of said levers and to the handle portions of the plier members. and a set-screw adjustably mounted in thehandle portion of one of said plier members and adapted 'to* engage the other of said plier members.

5. In 'a piston ring remover, a pair of plier connected members, divergent members secured to the ends of the jaw portions of the plier members, levers pivotally connected to the ends or" the divergent portions and each provided at one end thereof with a hook adapted to engage. in the slot of the piston ring, links pivotally connected to the free ends of said levers and to the handle portionsof the plier members, a set screw adjustably mounted in the handle portion of one of saidplier'members and adapted to engage theother ofsaid plier members, and means for-normally holding the jaw portions of the plier members in the open position.

In testimony whereof I hereunto afiix' my signature.

JACK B. #KABANUCK; 

